CPU often Front (from time to time) ring

My CPU memory in general will start to issue more than 30% of the sound
(previously only in the memory of the CPU for more than 80% of the audible!)

EVEREST data:
board temperature:45 ~ 53
central processing unit:55 ~ 58
CPU diodes:55 ~ 58
MAXTOR * Model *:50

CPU I have the voice of the sea is not heard what I said! ! Can I listen to it! ! Access to a computer more than 10 years, only know that the hard disk, motherboard, fans will ring, the CPU will be heard loud.
CPU how ring? EVEREST testing the use of police time?